$\int\frac{t^2}{\sqrt[4]{3+t^3}}dt$

$x\:adasdad$

$\int\frac{x}{\sqrt{9x^2-1}}dx$

$\lim_{x\to0}\left(e^x+x\right)^{\frac{9}{x}}$

$3-2^2-1\cdot3$

$\frac{d}{dx}\left(\sin\left(x\right)\right)\sin\left(2x\right)\cos\left(x\right)\sec^2\left(x\right)$

$f\left(x\right)=4x-3x^5+2x^{-3}$